SteelEye 4.5.0 manual Using LVM with LifeKeeper Data Replication, Hierarchy with LVM above LKDR

LifeKeeper LVM Hierarchy Creation and Administration

Using LVM with LifeKeeper Data Replication

The LVM Recovery Kit currently supports the use of LVM “above” LifeKeeper Data Replication (LKDR), but not LKDR “above” LVM. In other words, the kit can support a configuration in which the physical volume components of a volume group are LKDR devices, but it cannot support a configuration in which the source and/or target volumes of an LKDR mirror are defined as LVM logical volumes.

To build a hierarchy with LVM above LKDR, a two-phase hierarchy creation process must be used. The LKDR devices (i.e. hierarchies) must be configured using the LKDR “Data Replication Resource” option, prior to the creation of the LVM volume groups and logical volumes on the primary server. Once the desired volume groups and logical volumes have been created, the remainder of the hierarchy is created according to the configuration instructions for the recovery kit associated with the application to be protected. The resulting hierarchy will look something like the one shown in Figure 3 below.

Figure 3: Hierarchy with LVM above LKDR

LifeKeeper for Linux 11